Calculate the position of two names in FLAME

flame.py

def get_flame(name1, name2):    
    """Calculate the FLAME position of two names."""
    
    FLAME = ("Friendship", "Love", "Affection", "Marriage", "Enemies") # "Siblings" as an additional entry.
    
    # Get rid of the spaces and turn everything into lowercase.
    name1_crossed = name1.replace(' ', '').lower()
    name2_crossed = name2.replace(' ', '').lower()
    
    # Cross out common letters from both names.
    for letter in name1.lower():
        name2_crossed = name2_crossed.replace(letter, '')
    for letter in name2.lower():
        name1_crossed = name1_crossed.replace(letter, '')
    
    # Count the remaining letters and add them together.
    total = len(name1_crossed) + len(name2_crossed)
    result = (total % len(FLAME)) - 1
    return FLAME[result]

def main():
    while True:
        n1 = input("Name 1: ").strip()
        n2 = input("Name 2: ").strip()
        flame = get_flame(n1, n2)
        print(n1, '+', n2, '=', flame)
        print()

if __name__ == '__main__':
    main()